[media] SoC Camera: add driver for OV6650 sensor

This patch provides a V4L2 SoC Camera driver for OV6650 camera sensor, found
on OMAP1 SoC based Amstrad Delta videophone.

Since I have no experience with camera sensors, and the sensor documentation I
was able to find was not very comprehensive, I left most settings at their
default (reset) values, except for:
- those required for proper mediabus parameters and picture geometry and
  format setup,
- those used by controls.
Resulting picture quality may be far from perfect, but better than nothing.

In order to be able to get / set the sensor frame rate from userspace, I
decided to provide two not yet SoC camera supported operations, g_parm and
s_parm. These can be used after applying patch 4/6 from this series,
"SoC Camera: add support for g_parm / s_parm operations".

Created and tested against linux-2.6.36-rc5 on Amstrad Delta.
Signed-off-by: Janusz Krzysztofik <jkrzyszt@tis.icnet.pl>
Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

drivers/media/video/Kconfig

@@ -767,6 +767,12 @@ config SOC_CAMERA_PLATFORM
 	help
 	  This is a generic SoC camera platform driver, useful for testing
 
+config SOC_CAMERA_OV6650
+	tristate "ov6650 sensor support"
+	depends on SOC_CAMERA && I2C
+	---help---
+	  This is a V4L2 SoC camera driver for the OmniVision OV6650 sensor
+
 config SOC_CAMERA_OV772X
 	tristate "ov772x camera support"
 	depends on SOC_CAMERA && I2C

drivers/media/video/Makefile

@@ -77,6 +77,7 @@ obj-$(CONFIG_SOC_CAMERA_MT9M111)	+= mt9m111.o
 obj-$(CONFIG_SOC_CAMERA_MT9T031)	+= mt9t031.o
 obj-$(CONFIG_SOC_CAMERA_MT9T112)	+= mt9t112.o
 obj-$(CONFIG_SOC_CAMERA_MT9V022)	+= mt9v022.o
+obj-$(CONFIG_SOC_CAMERA_OV6650)		+= ov6650.o
 obj-$(CONFIG_SOC_CAMERA_OV772X)		+= ov772x.o
 obj-$(CONFIG_SOC_CAMERA_OV9640)		+= ov9640.o
 obj-$(CONFIG_SOC_CAMERA_RJ54N1)		+= rj54n1cb0c.o

include/media/v4l2-chip-ident.h

@@ -70,6 +70,7 @@ enum {
 	V4L2_IDENT_OV9655 = 255,
 	V4L2_IDENT_SOI968 = 256,
 	V4L2_IDENT_OV9640 = 257,
+	V4L2_IDENT_OV6650 = 258,
 
 	/* module saa7146: reserved range 300-309 */
 	V4L2_IDENT_SAA7146 = 300,